65765377 has 4 divisors (see below), whose sum is σ = 65781760. Its totient is φ = 65748996.

The previous prime is 65765363. The next prime is 65765411. The reversal of 65765377 is 77356756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 65765377 - 2¹⁹ = 65241089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65765347) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2368 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (16445440).

It is a Proth number, since it is equal to 2007 ⋅ 2¹⁵ + 1 and 2007 < 2¹⁵.

Almost surely, 2^65765377 is an apocalyptic number.

It is an amenable number.

65765377 is a deficient number, since it is larger than the sum of its proper divisors (16383).

65765377 is an equidigital number, since it uses as much as digits as its factorization.

65765377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16382.

The product of its digits is 926100, while the sum is 46.

The square root of 65765377 is about 8109.5855011215. The cubic root of 65765377 is about 403.6445608365.

The spelling of 65765377 in words is "sixty-five million, seven hundred sixty-five thousand, three hundred seventy-seven".